Hey, it may look a bit messy but if you locate classes CWReq1-4 and TestCWReq1-4.

Each Req has two method getActual() and printOutPut() and their test class with two method getExpected() and testAndOutput().

I have wrote something for Req1,2,4 but it gives errors.

If you could read the section 4.1 4.2 4.3 in pdf.

Req1 Find total number of films

Req2 How many films have a rental rate of 0.99

Req3 For each category, how many films are in that category

Req4 List the top 10 films by revenue